ES2395776T3 - Alternative pump with electronically monitored air valve and piston - Google Patents

Alternative pump with electronically monitored air valve and piston Download PDF

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Publication number
ES2395776T3
ES2395776T3 ES06774688T ES06774688T ES2395776T3 ES 2395776 T3 ES2395776 T3 ES 2395776T3 ES 06774688 T ES06774688 T ES 06774688T ES 06774688 T ES06774688 T ES 06774688T ES 2395776 T3 ES2395776 T3 ES 2395776T3
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Spain
Prior art keywords
air
valve
pump
piston
air valve
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ES06774688T
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Spanish (es)
Inventor
Mark L. Bauck
Mark T. Weinberger
David M. Behrens
Vu K. Nguyen
Christopher M. Lange
Wade D. Palashewski
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Graco Minnesota Inc
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Graco Minnesota Inc
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
    • F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L2003/25—Valve configurations in relation to engine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Compressor (AREA)

Abstract

Una bomba accionada por aire que tiene una válvula de aire con un asiento de la válvula (16) y una tapa dela válvula { 2 2 ) , comprendiendo la bomba: un imán (14) montado en dicho asiento de la válvula de dicha válvula de aire; y primer y segundo detectores de lengüeta (20) montados en la tapa de la válvula para monitorizar la velocidad y laposición del asiento de válvula (16).An air-operated pump having an air valve with a valve seat (16) and a valve cover {2 2), the pump comprising: a magnet (14) mounted on said valve seat of said valve air; and first and second tongue detectors (20) mounted on the valve cover to monitor the speed and position of the valve seat (16).

Description

Bomba alternativa con válvula de aire monitorizada electrónicamente y pistón Alternative pump with electronically monitored air valve and piston

CAMPO TÉCNICO TECHNICAL FIELD

Esta solicitud reivindica la prioridad de la Solicitud de Estados Unidos N° de serie 60/703.595, presentada el 28 de julio de 2005 y 60/704.290 presentada el 1 de agosto de 2005. This application claims the priority of U.S. Application Serial No. 60 / 703,595, filed on July 28, 2005 and 60 / 704,290 filed on August 1, 2005.

TÉCNICA ANTERIOR PREVIOUS TECHNIQUE

Las bombas alternativas de pistón accionadas por aire se conocen bien para el bombeo de diversos fluidos. Dichas bombas típicamente tienen válvulas de aire accionadas mecánica o neumáticamente para controlar el flujo de aire a los dos lados del pistón. El control de dichas bombas se ha realizado tradicionalmente monitorizando y controlando el flujo de fluido resultante en lugar de la propia bomba. Los dispositivos de la técnica anterior, tales como el dosificador EXTREME-MIX™ de Graco han monitorizado la posición del pistón con fines de control. Alternative air-operated piston pumps are well known for pumping various fluids. Such pumps typically have mechanically or pneumatically operated air valves to control the flow of air on both sides of the piston. The control of said pumps has traditionally been carried out by monitoring and controlling the resulting fluid flow instead of the pump itself. Prior art devices such as the Graco EXTREME-MIX ™ dispenser have monitored the position of the piston for control purposes.

La solicitud de patente británica publicada como GB 1.187.026, la técnica anterior más próxima, desvela un aparato para dispensar cantidades medidas de un liquido, por ejemplo cerveza. El aparato incluye un par de cámaras esféricas, teniendo cada un diafragma, que pueden moverse a presión, para definir un volumen que contiene liquido. Se emplea un par de interruptores accionados por aire, que permiten que el liquido se bombee fuera de una de las cámaras esféricas, y en la otra de las cámaras esféricas. Se incluye una cápsula de flujo en tanto un conducto de entrada del suministro de cerveza como en un conducto de salida del suministro de cerveza, ambos de los cuales comunican con las dos cámaras esféricas. Cada cápsula de flujo comprende un émbolo, un imán y un interruptor que tiene un par de contactos. El émbolo tiene surcos a través de los cuales el liquido puede fluir verticalmente hacia fuera de la válvula cuando el liquido mueve el émbolo hacia arriba fuera del contacto con un reborde adyacente a la entrada de la cápsula. The British patent application published as GB 1,187,026, the closest prior art, discloses an apparatus for dispensing measured quantities of a liquid, for example beer. The apparatus includes a pair of spherical chambers, each having a diaphragm, which can be moved under pressure, to define a volume containing liquid. A pair of air-operated switches are used, which allow the liquid to be pumped out of one of the spherical chambers, and in the other of the spherical chambers. A flow capsule is included in both an inlet of the beer supply and in an outlet of the beer supply, both of which communicate with the two spherical chambers. Each flow capsule comprises a plunger, a magnet and a switch that has a pair of contacts. The plunger has grooves through which the liquid can flow vertically out of the valve when the liquid moves the plunger up out of contact with a flange adjacent to the inlet of the capsule.

El documento GB 1237701 describe una bomba del tipo alternativa para medir cantidades de un fluido. Un par de pistones se sellan de forma deslizante en el diámetro de los cilindros respectivos, y los dos pistones tienen un área en sección transversal idéntica. Uno de los pistones se polariza en la cámara mediante un suministro regulado de presión de aire, mientras que el otro pistón se acciona para que se mueva hacia dentro y fuera con respecto a la cámara por medio de un cilindro de aire. El cilindro de aire se controla mediante un solenoide y se proporciona con interruptores de lengüeta que funcionan gracias a un pistón magnético en el interior del cilindro. GB 1237701 describes a pump of the alternative type for measuring quantities of a fluid. A pair of pistons are slidably sealed in the diameter of the respective cylinders, and the two pistons have an identical cross-sectional area. One of the pistons is polarized in the chamber by a regulated supply of air pressure, while the other piston is driven to move in and out with respect to the chamber by means of an air cylinder. The air cylinder is controlled by a solenoid and is provided with reed switches that work thanks to a magnetic piston inside the cylinder.

DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION

Por lo tanto, es un objeto de esta invención proporcionar un sistema que permita una mejor monitorización y control de un motor neumático alternativo para permitir la monitorización de la posición del pistón, el ciclo y los caudales, ciclos totales, control de embalamiento y la capacidad de diagnosticar defectos en el motor neumático y en los componentes inferiores de la bomba. Therefore, it is an object of this invention to provide a system that allows better monitoring and control of an alternative pneumatic engine to allow monitoring of piston position, cycle and flow rates, total cycles, packing control and capacity of diagnosing defects in the pneumatic motor and the lower components of the pump.

El control usa un imán montado en el asiento de la válvula del motor neumático y dos detectores de lengüeta montados en la tapa de válvulas para monitorizar la velocidad y la posición de la válvula. Un solenoide está montado sobre la tapa de válvulas y puede accionarse para extender un émbolo en el asiento de la válvula para detener el movimiento de la válvula y, por lo tanto, para impedir el embalamiento de la bomba (causado típicamente por el vaciado del suministro de fluido). La interfaz del usuario comprende una pantalla LCD y botones para ajusfar y controlar la bomba. La pantalla puede cambiar para mostrar la velocidad de ciclo, el caudal (en diversas unidades), los ciclos totales y los errores de diagnóstico. Los parámetros de ajuste pueden incluir unidades de fluido (cuartos de galón, litros, etc.) y el valor de referencia de embalamiento. The control uses a magnet mounted on the valve seat of the pneumatic motor and two tongue detectors mounted on the valve cover to monitor the speed and position of the valve. A solenoid is mounted on the valve cover and can be actuated to extend a plunger in the valve seat to stop the movement of the valve and, therefore, to prevent pump packing (typically caused by emptying of the supply of fluid). The user interface comprises an LCD screen and buttons to adjust and control the pump. The screen can change to show cycle speed, flow rate (in various units), total cycles and diagnostic errors. Adjustment parameters may include fluid units (quarts, liters, etc.) and the packing reference value.

Los interruptores de lengüeta y los imanes están ubicados para detectar cuando la válvula de aire está en la posición extrema de cada recorrido o en transición o ambos casos. El controlador calcula la velocidad a la que está funcionando el motor contando la apertura y el cierre de los interruptores de lengüeta activados por las posiciones variables de la válvula de aire. Después, el controlador compara esa velocidad con un valor preprogramado para determinar si el motor neumático está en estado de embalamiento. Cuando esa condición está presente, el controlador activa el solenoide impidiendo el cambio, lo que detiene el motor. Esto actúa para impedir que se derrame el fluido y/o daños a la bomba. The reed switches and magnets are located to detect when the air valve is in the extreme position of each path or in transition or both cases. The controller calculates the speed at which the engine is running by counting the opening and closing of the reed switches activated by the variable positions of the air valve. Then, the controller compares that speed with a preprogrammed value to determine if the pneumatic motor is in a packed state. When that condition is present, the controller activates the solenoid preventing the change, which stops the motor. This acts to prevent fluid spillage and / or damage to the pump.

Un detector magnetorresistivo se sitúa en el centro del motor neumático para monitorizar con precisión la posición del pistón. Los datos de este detector junto con los de los detectores de la válvula de aire proporcionan la entrada necesaria para un control preciso y el diagnóstico de la bomba y la hace adecuada para la medición y la aplicación de varios componentes. A magnetoresistive detector is located in the center of the pneumatic motor to accurately monitor the position of the piston. The data of this detector together with those of the air valve detectors provide the necessary input for precise control and diagnosis of the pump and makes it suitable for the measurement and application of various components.

Estos y otros objetos y ventajas de la invención parecerán más evidentes a partir de la siguiente descripción que se realiza junto con los dibujos adjuntos, en los que los caracteres de referencia similares se refieren a partes iguales o similares en todas las varias vistas. These and other objects and advantages of the invention will appear more apparent from the following description which is made together with the accompanying drawings, in which the similar reference characters refer to equal or similar parts in all the various views.

BREVE DESCRIPCIÓN DE LOS DIBUJOS BRIEF DESCRIPTION OF THE DRAWINGS

la fig. 1 muestra una sección transversal de la válvula de aire como parte de la presente invención, que muestra los imanes y los interruptores de lengüeta; fig. 1 shows a cross section of the air valve as part of the present invention, showing magnets and reed switches;

la fig. 2 muestra un detalle de la sección transversal de la válvula de aire de la fig. 1 como parte de la presente invención; la fig. 3 muestra una sección transversal (opuesta a la de la fig. 1) de la válvula de aire como parte de la presente invención que muestra el solenoide; la fig. 4 muestra una vista de una bomba que incorpora la presente invención; la fig. 5 muestra un detalle de la interfaz de usuario de la presente invención; y la fig. 6 muestra el pistón y el detector magnetorresistivo. fig. 2 shows a detail of the cross section of the air valve of fig. 1 as part of the present invention; fig. 3 shows a cross section (opposite to that of fig. 1) of the air valve as part of the present invention showing the solenoid; fig. 4 shows a view of a pump incorporating the present invention; fig. 5 shows a detail of the user interface of the present invention; and fig. 6 shows the piston and the magnetoresistive detector.

MEJOR MODO DE REALIZAR LA INVENCIÓN BEST MODE FOR CARRYING OUT THE INVENTION

En una bomba alternativa de pistón accionada por aire 10, el controlador 12 usa un imán 14 montado en el asiento de válvula 16 del motor neumático 18 y dos detectores de lengüeta 20 montados en la tapa de la válvula 22 para monitorizar la velocidad y la posición de la válvula 16. Un solenoide 24 está montado sobre la tapa de la válvula 22 y puede accionarse para extender un émbolo 2 6 en el asiento de válvula 16 para detener el movimiento de la válvula y, por lo tanto, impedir que la bomba 10 se embale (causado típicamente por el vaciado del suministro de fluido o porque la manguera de otro conducto de suministro tiene una fuga/rotura). La interfaz del usuario 28 comprende una pantalla LCD 30 y botones 32 para ajustar y controlar la bomba 10. La pantalla 30 puede cambiar para mostrar la velocidad de ciclo, el caudal (en diversas unidades), los ciclos totales y los errores de diagnóstico. La Tabla 1 muestra los códigos de diagnóstico que pueden obtenerse detectando la válvula de aire. In an alternative air-operated piston pump 10, the controller 12 uses a magnet 14 mounted on the valve seat 16 of the pneumatic motor 18 and two tongue detectors 20 mounted on the valve cover 22 to monitor speed and position. of the valve 16. A solenoid 24 is mounted on the valve cover 22 and can be actuated to extend a plunger 2 6 in the valve seat 16 to stop the movement of the valve and therefore prevent the pump 10 it is packed (typically caused by the emptying of the fluid supply or because the hose of another supply line has a leak / breakage). The user interface 28 comprises an LCD screen 30 and buttons 32 to adjust and control the pump 10. The screen 30 can be changed to show the cycle speed, the flow rate (in various units), the total cycles and the diagnostic errors. Table 1 shows the diagnostic codes that can be obtained by detecting the air valve.

Los interruptores de lengüeta 20 y los imanes 14 se sitúan para detectar cuando la válvula de aire 16 está en la posición extrema de cada recorrido o en transición o ambos casos. El controlador 12 calcula la velocidad a la que está funcionando el motor 18 contando la apertura y el cierre de los interruptores de lengüeta 20 activados por las posiciones variables de la válvula de aire 16. Después, el controlador 12 compara esa velocidad con un valor preprogramado para determinar si el motor neumático 18 está en estado de embalamiento. Cuando esa condición está presente, el controlador 12 activa el solenoide 24 impidiendo el cambio, lo que detiene el motor 18. Esto actúa para impedir que se derrame el fluido y/o para prevenir daños a la bomba. The tongue switches 20 and the magnets 14 are positioned to detect when the air valve 16 is in the extreme position of each path or in transition or both cases. The controller 12 calculates the speed at which the motor 18 is running by counting the opening and closing of the reed switches 20 activated by the variable positions of the air valve 16. Then, the controller 12 compares that speed with a preprogrammed value. to determine if the pneumatic motor 18 is in a state of packing. When this condition is present, the controller 12 activates the solenoid 24 preventing the change, which stops the motor 18. This acts to prevent the fluid from spilling and / or to prevent damage to the pump.

Un detector magnetorresistivo 34 se sitúa en el centro del motor neumático 18 para monitorizar con precisión la posición del pistón 36. Los datos de este detector 34 junto con los de los detectores de la válvula de aire 20 proporcionan la entrada necesaria para un control preciso y el diagnóstico de la bomba 10, y la hace adecuada para la medición y la aplicación de varios componentes. A magnetoresistive detector 34 is located in the center of the pneumatic motor 18 to accurately monitor the position of the piston 36. The data of this detector 34 together with that of the air valve detectors 20 provide the necessary input for precise control and the diagnosis of the pump 10, and makes it suitable for the measurement and application of various components.

Claims (5)

REIVINDICACIONES 1. Una bomba accionada por aire que tiene una válvula de aire con un asiento de la válvula (16) y una tapa de la válvula {22), comprendiendo la bomba: 1. An air-operated pump having an air valve with a valve seat (16) and a valve cover {22), the pump comprising: un imán (14) montado en dicho asiento de la válvula de dicha válvula de aire; y a magnet (14) mounted on said valve seat of said air valve; Y 5 primer y segundo detectores de lengüeta (20) montados en la tapa de la válvula para monitorizar la velocidad y la posición del asiento de válvula (16). 5 first and second tongue detectors (20) mounted on the valve cover to monitor the speed and position of the valve seat (16). 2. La bomba accionada por aire de la reivindicación 1 que comprende adicionalmente un solenoide (24) que tiene un émbolo (26) y que está montado sobre dicha tapa de válvula (22), siendo dicho solenoide capaz de extender dicho émbolo en dicho asiento de la válvula (16) para detener el movimiento de la válvula y, por lo tanto, el 2. The air-operated pump of claim 1 further comprising a solenoid (24) having a plunger (26) and which is mounted on said valve cover (22), said solenoid being able to extend said plunger into said seat of the valve (16) to stop the movement of the valve and, therefore, the 10 embalamiento de la bomba. 10 pump packing. 3. La bomba accionada por aire de la reivindicación 1 que comprende adicionalmente una interfaz de usuario 3. The air driven pump of claim 1 further comprising a user interface (28) que monitoriza dichos detectores de lengüeta (20) para permitir la visualización de diversos parámetros. (28) which monitors said reed detectors (20) to allow the display of various parameters. 4. La bomba accionada por aire de la reivindicación 3, en la que dichos parámetros pueden incluir la velocidad del ciclo, el caudal, los ciclos totales y los errores de diagnóstico. 4. The air-operated pump of claim 3, wherein said parameters may include cycle speed, flow rate, total cycles and diagnostic errors. 15 5. La bomba accionada por aire de la reivindicación 1, en la que dicha bomba accionada por aire comprende un pistón (36) y comprende adicionalmente un detector (34) para detectar la posición de dicho pistón. The air-operated pump of claim 1, wherein said air-operated pump comprises a piston (36) and further comprises a detector (34) to detect the position of said piston. 6. La bomba accionada por aire de la reivindicación 5, en la que dicho detector comprende un detector magnetorresistivo (34) . 6. The air-operated pump of claim 5, wherein said detector comprises a magnetoresistive detector (34). FIG..3 FIG. 3 SECCIÓN C SECTION C
ES06774688T 2005-07-28 2006-07-25 Alternative pump with electronically monitored air valve and piston Active ES2395776T3 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US70330605P 2005-07-28 2005-07-28
US703306P 2005-07-28
US70429005P 2005-08-01 2005-08-01
US704290P 2005-08-01
PCT/US2006/028826 WO2007016081A2 (en) 2005-07-28 2006-07-25 Reciprocating pump with electronically monitored air valve and piston

Publications (1)

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ES2395776T3 true ES2395776T3 (en) 2013-02-15

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ES06774688T Active ES2395776T3 (en) 2005-07-28 2006-07-25 Alternative pump with electronically monitored air valve and piston

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US (1) US20080199323A1 (en)
EP (1) EP1907806B1 (en)
JP (1) JP5237804B2 (en)
KR (1) KR101197406B1 (en)
CN (1) CN101233321B (en)
AU (1) AU2006275975B2 (en)
BR (1) BRPI0613878A2 (en)
ES (1) ES2395776T3 (en)
PL (1) PL1907806T3 (en)
RU (1) RU2413096C2 (en)
TW (1) TWI475157B (en)
UA (1) UA89254C2 (en)
WO (1) WO2007016081A2 (en)

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JP5237804B2 (en) 2013-07-17
US20080199323A1 (en) 2008-08-21
PL1907806T3 (en) 2013-02-28
CN101233321B (en) 2010-06-16
EP1907806A4 (en) 2009-09-16
UA89254C2 (en) 2010-01-11
KR101197406B1 (en) 2012-11-05
EP1907806A2 (en) 2008-04-09
WO2007016081A2 (en) 2007-02-08
TWI475157B (en) 2015-03-01
AU2006275975A1 (en) 2007-02-08
WO2007016081A3 (en) 2007-05-24
CN101233321A (en) 2008-07-30
JP2009503338A (en) 2009-01-29
WO2007016081A9 (en) 2007-04-12
TW200726911A (en) 2007-07-16
RU2413096C2 (en) 2011-02-27
BRPI0613878A2 (en) 2011-02-15
EP1907806B1 (en) 2012-10-24
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RU2008107573A (en) 2009-09-10
KR20080038136A (en) 2008-05-02

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